William s



(No Model.)

W. S. McOAY -& L. V. MOULT-ON.

' SEGTIONAL FEED ROLL.

No. 523,290. Patented July 17, 1894.

WITNESSES: l/Vl/E/VTORT ATTORNEY.

UNITED STATES PATENT Qnmcn.

WILLIAM S. MOCAY AND LUTHER V. MOULTON, OF GRAND RAPIDS, MICHIGAN; SAIDMOULTON ASSIGNOR TO SAID MOOAY.

SECTIONAL FEED-ROLL.

SI EGIFICATION forming part of Letters Patent No. 523,290, dated July17,1894.

Application filed June 2, 1893. Serial No. 476,391. (No model.)

to which it appertains to make and use the same.

Our invention relates to improvements in sectional feed rolls for woodworking machines, and its object is to provide the same with certain newand useful features, hereinafter more fully described and particularlypointed out in the claims, reference being had to the accompanyingdrawings, in Which- Figure 1 is a side view of the roll with one sectionremoved; Fig. 2 a full size end view of one section of the roll and abroken portion of the shaft; and Fig. 3 a side view of the same, withthe roll in section on the line '33 of Fig. 2.

Like letters refer to like parts in all of the figures.

A is a shaft in which are three equi-d-istant longitudinal grooves Aconcave in cross section, each having converging acute angles at eachside, whereby the opening in the surface of the shaft is less than theaxial diameter of the groove.

B, B, are collars at each side of the roll sections to keep them inplace. Said sections consist of a series of short hollow cylinders 0,having integral heads D at one end, each head having a central openingconsiderably larger than the shaft, whereby said section is laterallymovable about the axis of the same to the extent of the flexibility ofthe 5: otally attached to the shaft.

The roll sections are each provided with pins E, projecting from theinner face of the head D, with which the eyes H are engaged. In lieu ofthe pins, lugs as at E may be provided, and hooks I-I formed on theendof the wires to engage the same, we prefer the pins and eyes, as lesslikely to permit the springs to slip under end pressure. The springs arethus attachedat the middle to the shaft and at their ends to the rollsection, thereby forming a flexible connection, which enables the shaftto rotate the roll sections, and enables each of said sections toindependently yield to accommodate any variations in the thickness ofstock under the various sections. Said springs are placed in position byinserting the loop at the middle of a spring in each of the grooves A,and turning said springs at right angles to the axis of the shaft, thehooks H or eyes II will overlap each other at the adjacent ends of thesprings all round. The springs are next inserted in the roll section andengaged with the pins E, or lugs E. By

filling the roll section with springs in this manner, the springs engageand hold each otheriin' place in each section, and the heads D engageeach group of springs and retain them in the respective sections, saidhead also engages the shaft and limits thedeflection of the springs, andprevents bending or breaking the same. The normal tendency of the springbrings the shaft in the axis of the roll sections, and the springs aredeflected in either direction from the normal, as they come alternatelybetween the shaft and stock, or at the opposite position, and inintermediate positions one arm of the spring is compressed and the otherextended, the loop G serving as a pivot and equalizing the strain, andalso preventing any undue strain at the point of attachment to theshaft. Said springs are thus all in action all of the time, thussecuring more service with a given amount of material than in case ofdevices in which only a part of the springs are in action at one time.

What we claim is- 1. In a feed roll, a series of hollow cylindricalsections, having central openings, a shaft of less diameter than saidopenings and passing through the same, and aseries of springs pivotallyconnected to the shaft and extended in curved tangential lines from saidshaft and attached at their outer ends to said sections, and forming thesole connection between the same and said shaft, substantially asdescribed.

2. In a feed roll, in combination with a series of cylindrical rollsections, having central openings and a shaft of less diameter than saidopenings, and passing through the same, a series of springs pivotallyattached at the middle to said shaft, and having oppositely extendedcurved tangential arms pivotally attached at their outer ends to saidroll sections, substantially as described.

3. In combination with a feed roll, having hollow sections, havingcentral openings and a shaft of less diameter than said openings andpassing through the same, and havinga series of grooves concave in crosssection and having converging acute angles, a series of springs,havingloops near the middle inserted in said grooves to pivotally attachsaid springs to said shaft and oppositely extended curved arms to saidsprings attached at their outer ends to said roll sections,substantially as described.

4. In a feed roll in combination with a shaft and a series of hollowcylindrical sections, having heads with enlarged openings surroundingsaid shaft, pins projecting from said heads, and springs pivotallyattached at the middle to said shaft, and eyes in the ends of saidsprings engaging said pins, substantially as described.

5. In a feed roll, a series of hollow cylindrical sections, heads at oneend of each section, having central openings, pins projecting from saidheads, a shaft of less diameter than said openings and within the same,a series of longitudinal grooves, concave in cross section and havingconverging acute angles at each side and a series of wire springs havingloops at the middle engaging said grooves, and oppositely extendedcurved portions, terminating in eyes surrounding said pins,substantially as described.

In testimony whereof we aflix oursignatures in presence of twowitnesses.

WILLIAM S. MCCAY. LUTHER V. MOULTON.

Witnesses:

FRANK S. MADISON, LEWIS E. FLANDERS,

